23
Question Write 5 other examples for which you can find easy ways of getting products.
(a) 201 × 19
= 200 × 19 + 19
= 3800 + 19
= 3819
(b) 149 × 25
= 150 × 25 – 25
= 3750 – 25
= 3725
(c) 25 × 78
(d) 28 × 18
= 30 × 18 – 18 × 2
= 540 – 36
= 504
(e) 998 × 4
= 1000 × 4 – 8
= 4000 – 8
= 3992
(Answer may vary)